If one of them is wrong it is because it is blury! sorry!
13) 72/100
Answer:
Step-by-step explanation:
How to write numbers in standard form:
Write the first number 8.
Add a decimal point after it: 8.
Now count the number of digits after 8. There are 13 digits.
So, in standard form: 81 900 000 000 000 is 8.19 × 10¹³
Answer:
-3.5a-6.8ba
Step-by-step explanation:
You distribute the number or variable on the outside on each number or variable on the outside